Gage.



R. L. CARTER. GAGE.

APPLICATION FILED OCT. 4, 1916.

1,231,238. Patented June 26,19.

WITNESS I 7- INVENTOR. Z of; 34y A. 64/? T62- By MW ATTORNEY TUNITED stmras PATENT easier.

RAY I. CARTER, OF SYRACUSE, NEW YORK, ASSIGNOR OF ONE-HALF T0 LOUIS O.

' I BUCHHOLZ, OF SYRACUSE, NEW YORK.

GAGE.

the usual work-table of disk-grinding machines, the body of the said device having perforations for centering patterns and other work to be ground. A further object is to provide means for attaching the gage to the work-table for permitting the slide onthetable and at the same time allowing the body of the gage to be partially rotated for adjusting and setting the body in different positions relatively to the grinding disk. A further object is to provide means for accurately determining and for maintaining the adjustments. And a further object is to provide auxiliary parts which are detachably mounted upon the flat gage body, for gaging the grinding of segments and similar parts.

I attain these objects by the means set forth in the detailed description which follows, and as illustrated in the accompanying drawing, in which -Figure 1 is a top plan view of a diskgrinder to which my improvements are ap plied. I

Fig. 2 is a vertical cross-section taken on line 2-2 of Fig. 1. v

Fig. 3 is an enlarged top-plan view of the gage having associated therewith the auxiliary gaging parts.

Fig, 4 is a frontedge view of the same.

Figs. 5.,and 6 are respectively'a top-plan and a side-elevation of the auxiliary gaging part.

Fig. 7 is an enlarged view of one of the centering devices employed for positioning the work on the perforated body.

In the drawing, 2 represents generally a Specification of Letters Patent.

Application filed October 4, 1916.

gage to Patented June 26, 1917.

Serial No. 123,624.

disk grinder including the grinding disk 3 and the adjustable work-table l, the said table extending horizontally across the face of the disk and having a longitudinal groove 5, all of which parts-may follow the usual construction.

My invention consists of a flat plate or body 7 preferably of irregular shape as shown, having a straight edge 8 facing the disk 3, and a straight edge 8' at right angles to the edge 8. The opposite edge from the portion 8 'is provided with a depending lip or lug 9, which limits the movement of the body toward the disk 3. This lug is perforated and threaded to receive an adjusting screw 10, which engages the edge of the table, and the said lug is also split below the said screw, and a locking screw 11 is applied to the split end of said lug, for bind ing and holding the screw 10 from accidentally turning. A third screw 12 is threaded into the lug 9, the inner end of which engages the outer edge of the table 4. This latter screw is employed for adjusting the I gage body 7, so that the edge 8 may be positioned exactly parallel to the plane of the disk 3. The screw 12 is not operated except when the gage is first applied to the table. 13 represents a guide bar which is pivoted to the under side of the body 7 by a screw or rivet 14, the latter piercing alateral lug or arm 7 of the body 7. The guide 13 is disposed in the slot or groove 5 of the table, and while holding the gage body 7 in place on the table, allows the said body to be moved freely in the direction of said slot for adjusting the gage relatively to the center of disk 3, (see dotted lines Fig. 1). By providing the pivot 14, the body 7 maybe swung readily and freely and without danger of cramping on said point toward and away from the disk 3, as shown-by dotted lines in Fig. 3, while the guide 13 retains its normal position in the groove 5. The rotation or movement of the bodyj7 away from the disk 3 may be regulated'by the screw 10, and the angle of the edge 8 relatively to the face of the disk 3 may be gaged accurately by said screw. This feature is advantageous for grinding certain patterns or parts aswell as 'By 'n'oviding the gage-member other work, where bevels or angles are required.

The plate or body 7 has several rows of perforations 15. which are preferably staggered as shown. These perforations are provided for centering difl'erent articles. as A shown in dotted lines Figs. 1 and 2, while. they are being ground, and for this purpose it is customary to employ a ceiiteringpart, as 16, having a cylindrical body which is disposed in the perforations l5 and which fits the holes loosely enough to allow the work to be freely rotated or manipulated during the grinding operation. Centeringpart 16 has a tine or point 17 which is forced into the wood or other material, and which is preferably small in diameter so as not to disfigure or injure the pattern. The full and dotted lines in Fig. 2 show the application of the centering-part 16 to a circular pattern or part, A, which has been ground by contact with the disk 3. The larger the piece of work to be ground the farther the centering-part 1G is positioned from the disk By providing a relatively large number of the holes 15 and staggering them as shown, many different centers varying only slightly in measurement may be taken care of In pattern-making, a large number of segments, as 18, 19, and :20, shown in Fig. 3 are employed, and these must be trimmed or ground so as to be accurately fitted for forming a true circle. Usually patterns of this character are laminated or built-u and consist of three or more layers, anil each layer, as a rule, comprises six segments. Heretofore, the segments have been blanked out. and the ends have been trued by what is known as a trimmer. In the present device, I provide an auxiliary set of gageparts consisting of a pin or stud 21, which is inserted in a perforation 20 preferably located near the disk 3 or edge 8 ofthe body 7, and a slidable'gage 22 having a slot 22 through which a thumb-screw 25-3 is inserted of holes. as 2l'224. according to the size or are of the segments to be ground. this part may be moved for 'ardly or back- 'ardl v and also rotated so as to bring the square end intofair engagement with the segments? The tightening up of the screw then holds the slide in place. This provision enables me to adjust the auxiliary gage for accurately grinding segments of varying curvatures or arcsi'without additional parts. Having thus described my invention, what l claim as new and desire to secure by Letters-"Patent, is'

1. in a gage fondisk grinders, the combination with the work table. of :1 substantially fiat perforated body pivotally mounted upon said work table adjacent and adapted to be rotated toward and away from the grinding disk, and having a depcndi g lug, an adjusting screw threaded in said lug, and a set screw for maintaining the adj ustment of said body, the edge of the table adjacent said lug being in the path of movement of the ends of said screws and engaged thereby when the gage body is moved toward the grinding disk.

2. In a gage for disk grinders, the combination with the work table having a longitudinal groove, oI a substantially flat perforated body having a depending lug, a guidebar slidable in said groove, said bar pivoted to the underside of the body upon which said body is rotatable, and means carried by said lug for adjusting the body on the said guide and threadedinto either one of a number" bar.

In combination with a work table having a longitudinal groove, a gage, including a body having a plurality of perforations to receive a work-centering part, a bar upon which said body is pivoted, said bar slidable in the groove of the work table, means for adjusting said body relatively to said bar, and means for maintaining the adjustment of the said parts.

4. In combination with a work table having a longitudinal groove, a gage, including a substantially flat bodv having workcentering perforations arranged in staggered rows and having a depending lug supporting a number of adjusting screws which engage one edge of the table when said body is moved toward the grinding disk, and a guide-bar pivoted to the underside of said body upon which said body is rotatable for gaging work of different size and shape, the said bar disposed in the groove of said work table.

5. The combination with the work table, of a duplicating gage, including a guide-bar disposed in a groove in said work table, a

body having perforations lo receive workcentering parts. said body pivoted to one end of said guide-bar and resting upon said work table adapted to be rotated horizontally for gaging work of diti'erent size and shape, and means for adjusting and for maintaining the adjustment of said body relatively 'to said guide-bar.

t). In a gage for disk grinders, the combination with a grinding disk and. a work table. said tablehaving a longitudinal groove.. a guide-bar disposed in said groove. a gage body pivoted to one end to said guide ha adapted to be swung on said pivot toward and away from the grinding disk. a screw for effecting the rotation of the bodv in one directicn, and a screw for limiting the movement of the body in the opposite direction, one edge of the table disposed in the path of the movement of the. ends of l v I j 0 531d screws and engaged thereby when the \vhu-h suul l)(.)(l lfi pn'eted. saul glude. shdburly is moved lummlthe grnullng (llSk. :lhle m u f l()()\'u 1n snul luhle. :\H(l menus far nation with the grinding disk uml the wurlp eul :ulgulau' positions rel:lti\'el lo the griml- 5 table, 01 a guge hml 'zulnpte l l0 lie flat on in}: (llsh' :uul Mllll guide. I

the table. said body having a plurality of In tesliumn \\'lu -re 'l'-I nllix my signature.

\vpl'k-cenlelfinq nerfdrntions. guide upon llA-Y L. (l-HYPER. 

